As part of Road Trip 2015, CNET visits Mcity, a 32-acre fake city in Michigan designed to test self-driving cars' navigation and communication abilities -- and to keep research from migrating to Silicon Valley.

The dealer wars just got more interesting. Luxury electric-vehicle manufacturer Tesla launches a referral program, with new owners receiving $1,000 discounts and those making the referrals getting $1,000 of their own.